diff -r 1a0ac419f714 -r bd1a76c91d5b src/java/de/uapcore/lightpit/DatabaseFacade.java
--- a/src/java/de/uapcore/lightpit/DatabaseFacade.java	Sat Mar 31 18:11:09 2018 +0200
+++ b/src/java/de/uapcore/lightpit/DatabaseFacade.java	Sat Mar 31 19:35:04 2018 +0200
@@ -151,7 +151,7 @@
             try {
                 dialect = Dialect.valueOf(dbDialect);
             } catch (IllegalArgumentException ex) {
-                LOG.error(String.format("Unknown or unsupported database dialect %s. Defaulting to %s.", dbDialect, dialect));
+                LOG.error("Unknown or unsupported database dialect {}. Defaulting to {}.", dbDialect, dialect);
             }
         }